Skip the auto shop - Our mechanics make house calls

Q: There's a hose under the top radiator hose that seems to be leaking antifreeze. What hose is that and is it an easy fix?

asked by on

There was a slow loss in anti freeze I noticed last week when I checked under the hood it wasn't the top radiator hose but a hose under it I don't recognize in my Chrysler 300 hemi there isn't any fluid in my floor board or anything but I'm worried it may be my heater core or heater hoses no visible leaks anywhere else

Hi there. Usually the hose that’s directly under the top radiator hose is a return surge tank hose; typically coming from the radiator overflow coolant reservoir. Since winter is coming around soon, the best way to diagnose a coolant leak and to ensure it’s not your heater core of heater hose is to contact a professional mechanic and have them complete a coolant leak inspection. This service is the best way to eliminate the guess work and ensure you’re Chrysler 300 is repaired sooner rather than later.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. There's a hose under the top radiator hose that seems to be leaking antifreeze. What hose is that and is it an easy fix?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Are Cracked Hoses Repairable, or Should They Be Replaced?

Cracked hoses are unsafe for the proper operation of your vehicle and should be replaced at your earliest convenience. There is no way to repair a worn hose, nor would you want to. Hoses are designed to transfer engine coolant...

Q: Smoke coming from under the hood.

Engine coolant has a very distinct smell when it burns, a sweet candy like smell. If your coolant levels in the radiator aren't dropping, a leak can be ruled out. If the level is low, that means you are either leaking,...

Q: Water leaking down from by behind the timing belt cover

Hello. Thank you for writing in. Without knowing the make and model of the vehicle it is difficult to say what the issue may be. With that said, it is assumed that the leak is coming from the water pump...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...